The sexual act of two men getting in the 69 position where one man is doing a hand-stand and the other is behind him giving him a furious hand-job while spinning in a circle (Duggie can be used as a a noun or verb. Definition originates from Tosh.0, season 3, episode 2, video breakdown).

Bill and Tom were watching the Football game, but nothing was happening. So to pass the time they started doing the Duggie.

"duggie": is an idiomatic expression that can mean ANYTHING. it is derived from "Duggah," and its related form is "Dugg." there is a set of rules to determine which form to use. the rules are as follows:
Duggah- can be used when expressing a word of excitement, amazement, surprisment, or astonishment. normally used as the ONLY word in its sentence. example listed below
Duggie- can be used when expressing a word of sorrow, or surprise/astonishment. an example is listed under "Duggie."
Dugg- can be used as a direction or command. also normally used as the only word in its sentence. an example is listed under "Dugg."